Optical spectrometer
US6970242B2 · kind B2 · utility
1Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Jan 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/447
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Incoming light is spectrally analyzed by diffracting the incoming light with a grating. At least a part of the incoming light is split off so that this part contains mainly one polarization component of the incoming light. It is ensured that this split-off part and a remaining part of the incoming light reach the grating with their polarized component mainly parallel to a main direction of polarization which is diffracted with maximal efficiency by the grating. For this purpose, at least the split-off part is diffracted after being passed through a polarization rotating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.